Breadcrumb Home > Dictionary > Index X xu: Meaning and Definition of Find definitions for: xu Pronunciation: (s), [key] — pl. xu. an aluminum coin and monetary unit of Vietnam, the 100th part of a dong. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Xty. Xuan Tong ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language